Web roll changer



3L E933. l.. A. SCHMIDT WEB ROLL CHANGER Filed March 28. 1929 2 Sheets-Sheet l `\`b` .SS (Y) E l *i l fr;

| y "3 u] I l en mi "ig, 16| I II l1 l lx I 1 m i I E I n) i? l 'i I l i n ISH m :lli: ISI: .gmy I I i I n N 1 a s il 3 Ig/a 3;? l g .1| l: n h. INVENTOR MM' @et 3l, 1933. L. A. SCHMIDT WEB ROLL CHANGER Filed March 28, 1929 2 Sheets-Sheet 2 INVENTOR Patented Oct. 3l, 1933 PATENT OFFICE TVE1?. ROLL CHANGER Louis A. Schmidt, Brooklyn, N. Y., assigner to R. Hoe & Co., Inc., New York, N. Y., a corporation of New York; receiver Application March 28,

15 Claims.

The present invention relates to web roll supporting mechanism for use with printing machines.

Web roll racks or reels are in common use for supporting the rolls from which webs are fed to printing machines. These racks are usually mounted on a floor level below the printing machine and have a central shaft to which side members are secured and these side members are provided with arms which carry suitable means for engaging the core of the web roll and supporting it so that the roll maybe rotated, to feed the web to the printing machine.

These racks are usually rotated or oscillated to bring the engaging means into alignment with the core of the roll so that it may be supported thereby and carried successively, to a pasting position, where the end of the web on the roll is pasted to a web running to the machine, then to a running position where the roll is supported While its web is being fed to the machine, and then to a core discharging position, where the core of the exhausted roll is removed.

The side members of these racks as heretofore constructed have arms that are fixed with relation to each other and support the web rolls spaced equidistant about the shaft on which the rack is supported. With this arrangement, whenever a new roll is loaded into the rack, and the arms are moved to align the roll engaging means with the core of the roll, any other roll that may then be in the rack is simultaneously moved.

After a running roll is moved to running position and the tension properly adjusted it is preferable to avoid moving it; hence it is desirable to provide means for operating the side members that support each roll, independently of the side members that support any other roll.

One object of the invention is to provide a web roll supporting mechanism including a support for a running web roll and a support for a spare web roll, so arranged that one of the supports may be moved, as, for the purpose of loading a web roll therein, without moving the other support.

Another object of the invention is to provide a web roll supporting mechanism of the class de scribed, so arranged that a web roll may be moved from loading to pasting position without moving the support carrying a nearly spent roll that may be in the running position.

Another object of the invention is to provide a web roll supporting mechanism including a support for a running web roll and a support for Irving Trust Company,

1929. serai No. 350,531

a spent roll, so arranged on a common supporting means that the support holding the spent roll may be moved to a convenient position for removing the spent roll from the support without moving the support carrying the running roll.

It is also an object of the invention to provide a web roll supporting mechanism of generally improved construction, whereby the device will be simple and durable, as Well as convenient, practical, serviceable and eicient in its use.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed, it being understood that various changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing :from the spirit of the invention.

Figure 1 of the drawings shows the web roll support as seen when looking longitudinally of the printing machine, as viewed in the direction of arrow 1 of Figure 2; certain of the parts being broken away and others being shown in section.

Figure 2 is a view partly in section, showing the web roll support as seen on the line 2-2 of Figure 1, with one full roll in the running position and another in the loading position; and

Figure 3 is a View similar to Figure 2, showing the web roll support when the running roll is nearly exhausted and the web from the new web roll is being pasted to the web running to the machine.

Referring to the drawings, base blocks 11 and 11 have side frames 12 and 12 suitably secured to them. A shaft 13, is rotatably supported in suitable bearings in the frames 12 and 12'. Hubs 14 and 14 are keyed to the shaft 13 and have arms 15 and 15 which carry spindles 16 and 16' which are fitted with tapered rotatable caps 17 and 17 adapted to engage the hollow core of a web roll and support it so that it may be unwound. Any suitable means may be employed for moving the spindles axially and locking them in the arms.

Other hubs 18 and 18' are secured to worm wheels 19 and 19 and collars 2() and 20' secured to the shaft 13 prevent endwise motion of the hubs 18 and 18', but allow them to turn freely on the shaft 13. These hubs carry arms 21 and 21' similar to those carried by the arms 15 and 15.

The shaft 13 is extended through a bearing in the bracket 22 which is secured to frame 12, and a Worm wheel 23 is tted with a key 24 which slides in a keyway 25 in the shaft 13. The shaft 26 is rotatably supported in bearings in the bracket 27, secured to the bracket 22 and is driven by a source of power not shown. A Worm 28 is secured to the shaft 26 and meshes with the worm wheel' 23. Means are thus provided for rotating the shaft 13, and the arms 15 and 15 carried thereby.

Worms 29 and 29' mesh with worm Wheels 19 and 19' and are secured respectively to shafts 31 and 31', supported respectively in bearings formed in brackets 32 and 33, and 32 and 33 which are secured to the side frames 12 and 12.

Mitre gears 34 and 34' are secured respectively to shafts 31 and 31' and mesh with mitre gears 35 and 35 secured to shaft 36 which is rotatably supported in brackets 37 and 37 secured respectively to base blocks 11 and 11.

The worm gear 38 is secured to the shaft 36 and meshes with the worm 39 which is secured to the armature shaft of .electric motor 41. Gears 19, 29, 34 and 35 are respectively the same as gears 19', 29', 34 and 35', so itwill be understood that operation of the motor 41 will cause a simultaneous and uniform rotation of the arms 21 and 21 on the shaft 13.

The bracket 42 is secured to the side frame 12' and. provides a bearing for the shaft 43, which is screw threaded into the shaft 13. The worm gear 44 is secured to the shaft 43 and forms a thrust member engaging the inside of the ,l bracket 42; similarly the washer 45, secured to the shaft 43 by screw 46, forms 'a thrust member engaging the outside of the bracket 42.

A Worm 47 engages the worm wheel 44 and is secured to the shaft 48, which is rotatably supported in brackets, one of which is shown at 49, secured to bracket 42. A motor not shown may be provided for rotating the shaft 48, and it will be understood that by thus rotating the shaft 43 that the shaft 13 may be moved end- Wise in its bearings for properly positioning the web rolls sidewise.

Means to control the rotation of the web rolls and supply the necessary tension to the web being fed to the machine is provided by the straps 51 which are anchored on the shaft 36, extend around the running roll 51, thence around the pulleys 52 and 53,'and are secured to the weight pile 54.

The web from the running roll passes around the roller 55 and then to the printing machine above.

In operation, the running web roll 51 will be supported in the arms 21, 21' in the position shown in Figure 2, with its web being fed to the printing machine.

A spare web roll 56, may have been brought to the support on the truck 57, and the arms 15, 15 raised or lowered to align the caps 17, 17 with the core of the roll, this being accomplished Without moving the arms supporting the roll 51. The caps are then thrust into the hole in the core of the roll. When the roll 51 is nearly exhausted the machine may be slowed down and the spare roll 56 which has previously had paste applied to the end of its web, is raised to the pasting position as shown in Figure 3. When it comes in contact with the running web, the roll 56 is rotated and the pasted end becomes fastened to the ruiming web which is then severed from the exhausted roll.

The arms 21, 21' are then rotated to the loading position where the core of the exhausted roll is removed and a new spare roll put in its place, and the roll 56 is moved to the running position.

It will be understood that suitable interlocking devices such as automatically operated clutches or electrical limit switches may be provided to prevent operation in such manner that the web roll. in one support will collide with the web roll in the other support. Such devices are not shown herein as they are not part of thisv invention.

What I claim is:

1. In a web roll supporting mechanism adapted to support a plurality of web rolls from which webs are successively fed to a rotary printing couple, a plurality of movable supports having a single common` supporting shaft, for rotatably supporting web rolls, and means to independently move each of the supports in order to load a web roll therein and to move it to, and support it in a feeding position. 100

2. In a web roll supporting mechanism adapted to support a plurality of web rolls from which webs are successively fed to a rotary printing couple, a plurality of rotatable supports having a single common supporting shaft and each 105 adapted to receive a web roll in a loading position, move it to and rotatably support it in a running position, and means to rotate the said supports independently of each other.

3. In a web roll supporting mechanism, a plu- 110 rality of supports rotatable about a common axis, each adapted to receive a web roll in a loading position, move it to and rotatably support it in a running position, and means to rotate the said supports independently of each other.

4. In a web roll supporting mechanism, a plurality of supports rotatable about a common axis, each adapted to receive a web roll in a loading position and to successively move it to and rotatably support it in position for pasting, and for 120 running, 'and means to rotate the said supports independently of each other.

5. In a web roll supporting mechanism, a plurality of supports rotatable about a common axis, each adapted to receive a web roll in a loading 125 position, to rotatably support it, and to successively move it to positions for pasting, for running and for discharging the core, and means to rotate the said supports independently of each other.

6. In a web roll supporting mechanism, a shaft, arms secured to the shaft and adapted to rotatably support a web roll, means for turning the shaft about its axis to move a web roll supported by the arms, from loading to running position, 125 other arms rotatable on the shaft, adapted to rotatably support a second web roll, and means for simultaneously rotating the second mentioned arms to move a Web roll supported thereby from loading to running position; said first mentioned 140 means and said second mentioned means being operable independently of each other.

7. In a web roll supporting mechanism, a rst rotatable support for rotatably supporting a web roll in running position, a second support rotat- 145 able about the same axis as the first support, and means to independently rotate the second support in either direction to align it with a web roll.

8. In a web roll supporting mechanism, a rst 15D rotatable support for rotatably supporting a web roll in running position, a second support rotatable about the same axis as the first support, and means to independently rotate the second support to loading position and to pasting position.

9. In a web roll supporting mechanism, a first support for rotatably supporting a web roll in running position, means for rotating the first support about an axis, a second support for rotatably supporting a web roll, and separate means for rotating the. second support about the said axis.

10. In a web roll supporting mechanism, a first support for rotatably supporting a web roll, means for rotating the support about an axis to carry the roll to running position, and a second support rotatable in either direction about the said axis by separate means, whereby it may be properly positioned for receiving a web roll, Without moving the first support.

11. In a web roll supporting mechanism, a first rotatable support adapted to rotatably support a Web roll, means to rotate the support about an axis, whereby a web roll on the support is carried from loading to pasting and to running positions, a second support rotatable on the said axis and adapted to rotatably support another web roll, and separate means to rotate the second support in either direction to position it for loading, and to carry a roll to pasting position.- and to running position.

12. In a web roll supporting mechanism, a movable support for rotatably supporting a running Web roll, a movable support for rotatably supporting a spare web roll, a single shaft common to the support, tension devices arranged to engage the surface of the running roll, and means for moving the support for the spare roll Without disturbing the position of the running roll or the tension devices.

13. In a web roll supporting mechanism, a movable support for rotatably supporting a running web roll, a movable support for rotatably supporting a spare web roll, said supports having a common axis, tension devices arranged to engage the surface of the running roll, and means for moving the support for lthe spare roll without disturbing the position of the running roll or the tension devices.

14. A roll stand for printing presses, comprising a shaft, a plurality of pairs of arms thereon, each pair adapted to support a Web-roll, and means for rotating said pairs of arms independently.

15. A roll stand for printing presses, comprising a shaft, a pair of arms secured thereto, a pair of arms loosely mounted thereon, means for rotating said shaft, and means for rotating said last-mentioned pair of arms upon the shaft.

LOUIS A. SCHMIDT. 

